| DOI: | 10.1002/2016GL068665
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| 论文题名: | Evaporation of NaCl solution from porous media with mixed wettability |
| 作者: | Bergstad M.; Shokri N.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9007
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| EISSN: | 1944-8738
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| 出版年: | 2016
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| 卷: | 43, 期:9 | | 起始页码: | 4426
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| 结束页码: | 4432
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| 语种: | 英语
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| 英文关键词: | efflorescence
; evaporation
; mixed wettability
; salinity
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| Scopus关键词: | Atmospheric movements
; Carbon dioxide
; Cultivation
; Drying
; Efflorescence
; Evaporation
; Hydrophobicity
; Porous materials
; Sand
; Surface chemistry
; Wetting
; Atmospheric conditions
; Engineering process
; General dynamics
; Precipitation patterns
; Saline solutions
; Salinity
; Soil salinization
; Water evaporation
; Saline water
; aqueous solution
; evaporation
; experimental study
; grain size
; hydrophobicity
; porous medium
; salinity
; sandy soil
; sodium chloride
; wettability
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| 英文摘要: | Evaporation of saline water from porous media is ubiquitous in many processes including soil salinization, crop production, and CO2 sequestration in deep saline acquirer. It is controlled by the transport properties of porous media, atmospheric conditions, and properties of the evaporating saline solution. In the present study, the effects of mixed wettability conditions on the general dynamics of water evaporation from porous media saturated with NaCl solution were investigated. To do so, we conducted a comprehensive series of evaporation experiments using sand mixtures containing different fractions of hydrophobic grains saturated with NaCl solutions. Our results showed that increasing fraction of hydrophobic grains in the mixed wettability sand pack had minor impact on the evaporative mass losses due to the presence of salt whose precipitation patterns were significantly influenced by the mixed wettability condition. Through macroscale and microscale investigations, we found formation of patchy efflorescence in the case of mixed wettability sand pack as opposed to crusty efflorescence in the case of completely hydrophilic porous media. Furthermore, the presence of salty water and hydrophobic grains in the sand pack significantly influenced the general dynamics and morphology of the receding drying front. Our results extend the understanding of the saline water evaporation from porous media with direct applications to various hydrological and engineering processes. © 2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84970002352&doi=10.1002%2f2016GL068665&partnerID=40&md5=d584ea2f553a504712e18407f11112d9
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9970
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | School of Chemical Engineering and Analytical Science, University of Manchester, Manchester, United Kingdom
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| Recommended Citation: | |
Bergstad M.,Shokri N.. Evaporation of NaCl solution from porous media with mixed wettability[J]. Geophysical Research Letters,2016-01-01,43(9).
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